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Press the phone to a wall and hear faint sounds with live amplify.
🧱 Wall Listener — hear faint sounds through walls with your phone mic Curious what’s behind a wall — footsteps, voices, pipes, or a noisy neighbor? Wall Listener turns your phone into a simple acoustic helper: press it flat against the surface, start listening, amplify live audio (headphones recommended), and watch the wall pulse so you can compare spots. The app uses the microphone with adjustable gain — useful for DIY checks when something is hard to hear through masonry or plaster. 🔊 How it works 1️⃣ Allow microphone access 2️⃣ Press the mic side flat against the wall 3️⃣ Start listening — use headphones for clearer amplify and less feedback 4️⃣ Move slowly between spots and follow stronger signals ⚠️ Best in a quiet room. Room noise, speech, and appliances also raise the meter. Always respect privacy and local law. 🛠 Key features 🧱 Terracotta wall pulse with live mic level 🟢 Quiet / Moderate / Active status 🎚 Adjustable amplify gain 🔊 Live amplify to speaker or headphones 📳 Vibration feedback on spikes ⚙️ English and Russian 📴 Core listening works offline 🏠 Perfect for ✔ Checking walls for faint voices or footsteps (with consent / lawfully) ✔ DIY checks near pipes and noisy rooms ✔ Comparing quiet vs louder contact points ✔ Finding where sound peaks before calling a pro ✔ Home renovation acoustic checks ⚠️ Important notes Uses the phone microphone only — not a surveillance or ultrasonic tool Does NOT replace a professional listening device or leak detector Results depend on phone mic quality, contact, wall material, and background noise Amplify can feedback on the built-in speaker — prefer headphones This app is a practical DIY helper, not a professional instrument 🔐 Privacy first 🔒 No accounts 🔒 Listening stays on-device 🔒 No cloud required for the core tool 📣 Ads may load when you are online (Yandex Mobile Ads) 📱 Wall Listener — press the wall and listen with clearer, honest tools